Question

Read the passage and answer the questions that follow. Bottlenose Dolphins Bottlenose dolphins are found in warm water all over the world. They live both in shallow water close to shore and far out in deep dark water. These dolphins shed their outermost layer of skin every two hours and grow to be anything between 6 and 12-feet long. They are usually found to surf in the waves and wakes of boats and swim through self- made bubble rings, being able to swim up to 22 miles an hour.

(1) These sea mammals feed on fish, squid and shrimp. A group of dolphins will cooperate to make a mud ring to trap fish. Then, some of the dolphins in the group will wait outside the ring for the fish that try to escape, gulping them up as a snack. (2)

Thought to be some of the smartest animals on Earth, bottlenose dolphins send messages to one another in many different ways. They squeak, squawk and use body language-leaping as high as 20 feet in the air, snapping their jaws, slapping their tails on the surface of the water, blowing bubbles and even butting heads. Each dolphin has a special whistle that it creates soon after it is born. This whistle is used for identification, just like a human's name. (3)

Dolphins also produce high frequency clicks, which act as a sonar system called echolocation. When the clicking sounds hit an object in the water , like a fish or rock, they bounce off and come back to the dolphin as echoes. Echolocation tells the dolphins the shape, size, speed, distance, and location of the object. Bottlenose dolphins have a sharp sense of hearing. Scientists believe that the sounds travel through the dolphin's lower jaw to its inner ear and then are transmitted to the brain for analysis. (4)

Very social and playful mammals, bottlenose dolphins form friendships that last decades, hunting together and protecting each other. (5)

Q.1 Which of these is true according to the passage?

A. Dolphins are herbivores.

B. Dolphins are good swimmers.

C. Dolphins are all of the same size.

D. Dolphins do not get along in a
group.​

Answer 1

Answer:

B. Dolphins are good swimmers.